IDENTIFIERS

Current Taxon Name (Soil Name): Union

OSD

Series Extent

User Site ID: 1999MO055026M

User Pedon ID: 1999MO055026

Vegetation Plot ID: 1999MO055026

Transect:

Transect Stop Number - 1

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - MCL

Lab Pedon # - M9905526

Print Date: 11/21/2024

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 38.0420639

Std. Longitude: -91.5123583

Datum: WGS84

Township: T38N

Range: R5W

Section: 6

PLSS Details: 2480 feet S and 1600 feet W of the NE corner

Location Description: 2480 feet South and 1600 feet West of the Northeast corner of Sec.6 T.38N., R.5W.

State: Missouri

County: MO055—Crawford

MLRA: 116A—Ozark Highland

Non-MLRA Soil Survey Area: MO055—Crawford County, Missouri

7.5 Minute USGS Quad: 38091-A5—Rosati, Missouri

PEDON

Describers Name: Ralph Tucker, Scott Larsen, Dennis Meinert

Current Taxonomic Class: Fine-silty, mixed, active, mesic Oxyaquic Fragiudalfs

Current Taxon Kind: taxadjunct

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: Converted from PDP 3.x

Correlated Information:

Soil Name - Union

PSC - 18 to 68 cm.

Classificaton Date - 12/7/2012

Classifier - J.R. Perkins

Soil Taxonomic Edition - eleventh edition

Moisture Subclass - udic

Sampled As Information:

Soil Name - Union

Taxonomic Class - Fine-silty, siliceous Oxyaquic Fragiudalfs

Taxon Kind - series

PSC - 18 to 68 cm.

Classificaton Date - 9/2/1999

Moisture Class - udic

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

Field Measured Properties: 80 cm of Direction of soil exposure

SITE

Parent Material: loess over pedisediment over residuum

Landscape: hills

Landform: ridge

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Position: middle third

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: medium

Drainage Class: moderately well

Flooding: none flooding

Ponding: none ponding

Geology: Pennslyvanian Undifferentiated formation of the Pennslyvanian Undifferentiated group.

Surface Fragments: 0.00 percent

Benchmark Soil?: yes

VEGETATION

SITE OBSERVATION

Observation Date: 9/2/1999 (actual site observation date)

Air Photo ID: A-3

Surface Cover Properties:

Site Obs. Cover Kind 1 - barren land

Site Obs. Cover Kind 2 - other grass/herbaceous cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
RHUS RUAL SOLID	Rhus Rubus allegheniensis Solidago	sumac Allegheny blackberry goldenrod	— — —	— — —	— — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
fragipan	—	86 - 109	- 23 -

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon fragipan lithologic discontinuity reduced matrix redox depletions with chroma 2 or less lithologic discontinuity	0—18 18—203 86—109 86—109 86—109 86—109 109—203	—18— —185— —23— —23— —23— —23— —94—

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
4	—	—	349	—	80	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 8 centimeters (0.0 to 3.1 inches); dark brown (10YR 3/3) silt loam; 13 percent clay; 10 percent yellowish brown (10YR 5/6) fine prominent mottles; weak very fine subangular blocky parts to moderate fine granular, and weak fine subangular blocky parts to moderate fine granular structure; friable; many (6.0) very fine roots and common (3.0) medium roots and many (6.0) fine roots and common (3.0) coarse roots; many (6.0) very fine interstitial and many (6.0) fine interstitial pores; fragments; strongly acid, pH 5.4, pH meter; clear smooth boundary. Lab sample # MU062515

EB—8 to 18 centimeters (3.1 to 7.1 inches); brown (10YR 4/3) silt loam; 15 percent clay; weak coarse platy parts to weak fine and medium subangular blocky structure; friable; common (3.0) very fine roots and common (1.0) medium roots and common (3.0) fine roots and common (1.0) coarse roots; many (6.0) very fine interstitial and many (6.0) fine interstitial pores; fragments; very strongly acid, pH 4.5, pH meter; clear smooth boundary. Lab sample # MU062516

Bt1—18 to 28 centimeters (7.1 to 11.0 inches); dark yellowish brown (10YR 4/4) silt loam; 18 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; friable; common (3.0) medium roots and common (3.0) fine roots; many (6.0) medium interstitial and many (6.0) fine interstitial pores; 15 percent distinct clay films on vertical faces of peds; fragments; extremely acid, pH 4.2, pH meter; clear smooth boundary. Lab sample # MU062517. patchy - phpvsfiid 136621; patchy - phpvsfiid 136621

Bt2—28 to 48 centimeters (11.0 to 18.9 inches); brown (7.5YR 4/4) silt loam; 15 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; very friable; common (3.0) very fine roots and many (6.0) medium roots and common (3.0) fine roots and many (6.0) coarse roots; many (6.0) very fine tubular and many (6.0) medium interstitial and many (6.0) fine interstitial and many (6.0) fine tubular pores; 10 percent distinct clay films on vertical faces of peds and 60 percent distinct brown (10YR 5/3), moist, organic stains throughout; fragments; extremely acid, pH 4.4, pH meter; clear smooth boundary. Lab sample # MU062518. discontinuous - phpvsfiid 136622; patchy - phpvsfiid 136623; discontinuous - phpvsfiid 136622; patchy - phpvsfiid 136623

Bt3—48 to 86 centimeters (18.9 to 33.9 inches); brown (7.5YR 4/4) silty clay loam; 40 percent clay; strong fine subangular blocky, and strong medium subangular blocky structure; firm; common (1.0) medium roots and common (1.0) fine roots; many (6.0) medium interstitial and many (6.0) fine interstitial pores; 60 percent prominent brown (7.5YR 4/4), moist, clay films on all faces of peds; fragments; extremely acid, pH 4.4, pH meter; gradual smooth boundary. Lab sample # MU062519. discontinuous - phpvsfiid 136624; discontinuous - phpvsfiid 136624

2Btx—86 to 109 centimeters (33.9 to 42.9 inches); gray (10YR 6/1) extremely gravelly silt loam; 18 percent clay; weak very coarse prismatic parts to weak thin platy, and weak extremely coarse prismatic parts to weak thin platy structure; extremely firm, very strongly coherent; brittle; few (0.5) medium roots and few (0.5) fine roots; common (3.0) medium vesicular and 3.0 fine and medium vesicular pores; 10 percent prominent clay films in root channels and/or pores and 30 percent distinct clay films on rock fragments; 11 percent medium prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron; 10 percent by volume nonflat indurated 75-162-250 millimeter quartzite fragments and 60 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; extremely acid, pH 4.4, pH meter; clear wavy boundary. Lab sample # MU062520. patchy - phpvsfiid 139170; continuous - phpvsfiid 139171; patchy - phpvsfiid 139170; continuous - phpvsfiid 139171

3Bt1—109 to 130 centimeters (42.9 to 51.2 inches); 70 percent red (2.5YR 4/6) and 30 percent strong brown (7.5YR 5/6) gravelly clay; 62 percent clay; weak coarse prismatic parts to strong medium angular blocky, and weak coarse prismatic parts to strong fine angular blocky structure; very firm; few (0.5) medium roots and few (0.5) fine roots; 3.0 medium interstitial and 3.0 fine interstitial pores; 60 percent prominent clay films on all faces of peds; 10 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 15 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.5, pH meter; clear wavy boundary. Lab sample # MU062521. discontinuous - phpvsfiid 139172; discontinuous - phpvsfiid 139172

3Bt2—130 to 157 centimeters (51.2 to 61.8 inches); 60 percent yellowish red (5YR 4/6) and 40 percent dark yellowish brown (10YR 4/6) very gravelly clay; 55 percent clay; moderate fine angular blocky, and moderate medium angular blocky, and moderate medium subangular blocky structure; very firm; few (0.5) medium roots and few (0.5) fine roots; common (3.0) medium interstitial and common (3.0) fine interstitial pores; 25 percent distinct clay films on rock fragments and 60 percent prominent clay films on all faces of peds; 15 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 20 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.7, pH meter; gradual smooth boundary. Lab sample # MU062522. patchy - phpvsfiid 139174; discontinuous - phpvsfiid 139173; patchy - phpvsfiid 139174; discontinuous - phpvsfiid 139173

3Bt3—157 to 178 centimeters (61.8 to 70.1 inches); 50 percent brown (7.5YR 4/3) and 30 percent dark red (2.5YR 3/6) and 10 percent yellowish brown (10YR 5/8) and 10 percent N 6/1 (N 6/1) very gravelly clay; 74 percent clay; strong medium subangular blocky parts to moderate fine angular blocky structure; very firm; few (0.5) medium roots and few (0.5) fine roots; common (3.0) medium interstitial and common (3.0) fine interstitial pores; 25 percent prominent clay films on all faces of peds and 60 percent prominent clay films on all faces of peds; 5 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 35 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; extremely acid, pH 4.4; clear smooth boundary. Lab sample # MU062523. discontinuous - phpvsfiid 139175; discontinuous - phpvsfiid 139176; discontinuous - phpvsfiid 139175; discontinuous - phpvsfiid 139176

3Bt4—178 to 203 centimeters (70.1 to 79.9 inches); 60 percent brown (7.5YR 4/4) and 40 percent brown (10YR 4/3) extremely gravelly clay; 41 percent clay; moderate medium platy parts to weak fine subangular blocky structure; very firm; common (3.0) medium interstitial and common (3.0) fine interstitial pores; 15 percent prominent red (2.5YR 4/6), moist, clay films on faces of peds and 75 percent faint brown (10YR 4/3), moist, clay films on all faces of peds; 85 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.6, pH meter. Lab sample # MU062524. The chert in this horizon is soft and bedded.; patchy - phpvsfiid 139177; continuous - phpvsfiid 139178; patchy - phpvsfiid 139177; continuous - phpvsfiid 139178